Need a new Cobra Long Block -- Aluminator or Cobra Block? currently KB 2.8 660 rwhp

[Banshee06]

My Cobra motor has a frozen cam on the drivers side head which broke the timing chain. It's $5500 to pull motor and fix the head. I am worried that there could be more wrong. Is It better to just get the same cast iron cobra long block or get the 4.6 4V Aluminator block? I am running full length headers, catless x-pipe, A brand new Kenne Bell 2.8 Lc supercharger and its putting out about 666 rwhp on 94 Octane..

 

[98 Saleen Cobra]

I'd get the 46x shortblock and fix the heads.. They don't really make the long blocks anymore because the 03/04 Cobra heads aren't made anymore iirc.. But the 46x shortblock makes it like 9.8 compression and combine that with e85 it'll be nasty